After graduating from a university in Tokyo and immediately securing a job within the metropolitan area, Yuusuke went on a two-night, three-day hot spring trip with his parents as an act of filial piety. Having always seen his mother, Tomoriko, as a woman, Yuusuke couldn't hold back his emotions and forcibly had sex with her while his father wasn't looking. Yuusuke's heart wavered between a sense of accomplishment and guilt... He knew it was wrong, but his heart and body ran wild on their own...
